On Thu, 14 Jan 2010 10:14:45 +0000
Jarek Poplawski [off-list ref] wrote:

This makes it safe, but it still resembles the "short term fix"
according do David's opinion.

This change seems to affect dev->stats too. Since they are not
updated in sky2_tx_clean(). Btw, I hope "&" is some optimization
because it's less readable than "&&".

Stats don't matter for packets flushed during device reset.

The & is because in the most common case device is up,
and we don't want the additional conditional branch.